The Elta 019‑0350-STD is a 350mm flanged damper engineered to prevent backflow of air when the fan is inactive, helping to maintain system efficiency and airflow direction. It is designed to be mounted directly onto the fan casing flange for ease of installation. Built from hot dip galvanised steel, the damper provides excellent durability and resistance to corrosion. The internal butterfly-style blades are also made from galvanised steel, ensuring consistent performance. Suitable for installation in both horizontal and vertical (upward airflow) orientations, this damper is a practical solution for various ventilation configurations.